40A ESC ZTW Shark G2 2S-4S SBEC ESC Controller For Light Underwater Thrusters
The ZTW Shark G2 40A is a 32-bit waterproof ESC delivering 40A continuous and 55A burst on 2-4S LiPo. With splash-proof glued design, flat water cooling, 5V/6V 4A SBEC, synchronous rectification, forward/reverse modes, and separate control/power boards for RC boats and underwater
ZTW Shark G2 40A 32-Bit Waterproof ESC 2-4S with Water Cooling and SBEC for RC Boats and Light Underwater Thrusters
32-Bit Precision for Sport RC Boats
Powered by a 32-bit microprocessor with an improved control algorithm, the Shark G2 40A delivers lightning-fast response, super smooth start-up, and accurate throttle linearity — suited for sport RC boats, fast electric runabouts, and medium underwater thrusters.
40A Continuous / 55A Burst on 2-4S
Advanced new-generation MOSFETs provide low heat and withstand instant high-current surges reliably. 40A sustained and 55A peak on 2-4S LiPo offers solid headroom for 2-4S motor setups in both recreational and light commercial marine applications.
Splash-Proof with Flat Water Cooling
The waterproof-glued enclosure resists splash and spray, while the integrated flat water-cooling system ensures efficient thermal management — a key advantage in the confined, heat-trapping motor boxes of medium-size RC boats.
4A Adjustable SBEC for Servo Power
A 5.0/6.0V switching BEC supplies 4A continuous, powering the receiver and standard servos. Adjustable voltage matches digital servos for sharper steering response.
Synchronous Rectification Efficiency
Synchronous rectification dramatically reduces ESC operating temperature, improving overall powertrain efficiency and extending battery life — meaningful for both longer recreational sessions and lightweight underwater missions.
Forward/Reverse & Separate Board Layout
"Forward Only" and "Forward and Backward" modes cover racing and operational needs. The isolated control-board/power-board design improves EMI resistance and long-term reliability by keeping heat away from sensitive control components.
5-Layer Protection & Flexible Programming
Start-up, over-heat, LVC, phase loss, and signal loss protection. Configure via transmitter stick or ZTW LCD Program Card G2 (Phone App optional with adapter). At just 69×33×9mm and 45g, it fits the tightest installations.
Technical Specifications
| Specifications | Shark 20A SBEC G2 | Shark 30A SBEC G2 | Shark 40A SBEC G2 | Shark 50A SBEC G2 | Shark 60A SBEC G2 | Shark 80A SBEC G2 | Shark 100A SBEC G2 | Shark 120A SBEC G2 |
|---|---|---|---|---|---|---|---|---|
| Continuous Current | 20A | 30A | 40A | 50A | 60A | 80A | 100A | 120A |
| Burst Current | 30A | 40A | 55A | 65A | 80A | 100A | 120A | 140A |
| Input Voltage | 2-4S LiPo | 2-4S LiPo | 2-4S LiPo | 2-4S LiPo | 2-6S LiPo | 4-6S LiPo | 4-6S LiPo | 4-6S LiPo |
| BEC Output | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A |
| Water Cooling | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (32mm Tube) | Yes (32mm Tube) | Yes (32mm Tube) |
| Programming | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 |
| Firmware Upgrade | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported |
| Power Wire | 18AWG | 16AWG | 14AWG | 14AWG | 14AWG | 12AWG | 10AWG | 10AWG |
| Motor Wire | 18AWG | 16AWG | 14AWG | 14AWG | 14AWG | 12AWG | 12AWG | 12AWG |
| Battery Plug | XT60 | XT60 | XT60 | XT60 | XT60 | XT90 | XT90 | XT90 |
| Motor Bullet | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 4.0mm Gold | 4.0mm Gold | 4.0mm Gold |
| Size (L×W×H) | 60×33×10mm | 60×33×10mm | 69×33×9mm | 69×33×9mm | 70×41×12mm | 89×45×13mm | 89×45×13mm | 89×45×13mm |
| Weight | 32g | 36g | 45g | 45g | 65g | 98g | 105g | 105g |
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